3.9 Plus 15 Addition :

Number 1	Number 2	Answer
3.9	15	18.9

How to calculate 3.9 plus 15 ?

Let's break down the addition of 03.9 and 1500 step by step:

   03.9      <-- Start with the rightmost column
+  1500
---------

    Add the digits in the rightmost column:
        9 + 0 + 0 = 9
        Write down 9 in the rightmost column, carry over 0 to the next column.

   03.9
+  1500
---------
     9


    Add the digits in the rightmost column:
        3 + 5 + 0 = 8
        Write down 8 in the rightmost column, carry over 0 to the next column.

   03.9
+  1500
---------
     8.9


    Add the digits in the rightmost column:
        0 + 1 + 0 = 1
        Write down 1 in the rightmost column, carry over 0 to the next column.

   03.9
+  1500
---------
     18.9

    Continue to the left:
        There are no more columns to the left.

The final result is 18.9.

Similar Summation Operations :

Number 1	Number 2	ANSWER:	HOW TO ?
4	20	24	4 plus 20
4.1	24	28.1	4.1 plus 24
4.2	31	35.2	4.2 plus 31
9	0.8	9.8	9 plus 0.8
5.3	0.7	6	5.3 plus 0.7
4.6	8.4	13	4.6 plus 8.4